XML 28 R49.htm IDEA: XBRL DOCUMENT v3.20.1
Organization (Details)
Mar. 31, 2020
ft²
property
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 62
Area of real estate property (in square feet) | ft² 18,757,303
Joint Venture, Blackstone Property Partners  
Real Estate Properties [Line Items]  
Ownership interest 20.00%
Consolidated portfolio  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 60
Area of real estate property (in square feet) | ft² 16,830,161
Consolidated portfolio | Office  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 51
Area of real estate property (in square feet) | ft² 13,374,382
Consolidated portfolio | Studios  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 3
Area of real estate property (in square feet) | ft² 1,224,403
Consolidated portfolio | Land  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 6
Area of real estate property (in square feet) | ft² 2,231,376
Unconsolidated portfolio  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 2
Area of real estate property (in square feet) | ft² 1,927,142
Unconsolidated portfolio | Office  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 1
Area of real estate property (in square feet) | ft² 1,477,142
Unconsolidated portfolio | Land  
Real Estate Properties [Line Items]  
Number of real estate properties (in properties) | property 1
Area of real estate property (in square feet) | ft² 450,000